Rail-brake.



O. FREIMARK.

RAIL BRAKE. APPLICATION FILED AUG-17.19M-

Patented July 23, 1918.

2 SHEETS-SHEETI 0. FREHWARK.

RAIL BRAKE.

APPLICATION FILED AUG-17.1917.

Patented July 23, 1918.

2 SHEETS-SHEET 2.

n: mam-1s prunes COMNOm-LITHQ. WASHINGTON. n c.

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UNITED srarns mam crnrpn.

WWW ll l-i'l -ll ihlhm '9 MARTIN, 5 52.

Learners/anti.

To all whom, it may concern:

Be it known that I, Or'ro Fnnnvmnn, a citizen of the United States of America, residing at Martin, in the county of @ttawa and State of Ohio, have invented certain new and useful Improvements in ltail- Brakes, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a rail brake and has for its object the provision of a simple and eifective brake which is adapted to be supported upon the truck of a railroad car and the like in such a manner as to permit the same tobe thrown immediately into engagement with the rails and thereby bring the car or truck to an immediate stop.

Another object of this invention is the provision of a simple and eflicient rail brake which will normally be supported or re tained in a retracted position or out of engagement with the rail. l l

With these and other objects in view the invention consists of certain combinations, constructions and arrangements of parts as will be hereinafter fully described and claimed. y

In the drawings Figure l is a side elevation of a truck having the rail brake applied thereto; 7

Fig. 2 is a transverse sectional view through a truck showing the bolster and the means for supporting the rail brake directly above the rails;

Fig. 3 is a vertical section through the rail brake and casing;

Fig. i is a top plan view of the rail brake; ig. 5 is a section taken on the line 5-5 of Fig. 3; r

Fig. 6 is a section taken on the line 8-6 of Fig. 3

By referring to the drawings it will be seen that l designates the truck of the usual construction which supports the wheels 2 and it should be understood that the brake casing 3 is suspended below the truck or bolster in any suitable or desired manner without departing from the spirit of the invention. The said supporting means for the casing 3 is of course not essential to the efl'ectual operation of the rail brake.

This casing 3 is provided with flanges 4t upon the sides thereof through which flanges 4 pass suitable securing means 5" tor connecting the casing 3 to a suitable support. The casing 3 is provided with a specification or letters re-tent.

application filed August 17, 191?.

Serial No. 1%,?89.

pocket portion 5 which pocket portion 5 is in turn provided with a plurality of spaced integral ribs 6, which ribs are provided with vertically extending sockets 7.

Plunger rods 8 are mounted Within the sock 15 is mounted upon each rod 8 and engages the upper end of the springs 9 for causing the springs to be compressed when the shoes.

12 are forced downwardly. It should be understood that the eyes 14 will constitute an effectual means for holding the, washers l5 against accidental displacement from the rods 8. By carefully consideringFig. 3 it will be seen that the brake shoes 12 are pivotally mounted within the pocket portion. 5 or the casing 3 by meansof pivot pins 16.

it pressure block 17 is slidahly mounted between the spaced integral ribs 6 asshowu clearly in Fig.3 of the drawings and this pressure block 17 is provided with a pluraiity ofsockets 18 formed therein within which sockets 18 are mounted plungers 19. The lower end of these plungers 19 engage the inner ends of the brake shoes12 and springs 20 are mounted in the sockets l8 and bear against the inner ends of the plungers 19 for causingthe plungers 19 to yieldably engage the shoes 12. This block 17 is adapted to freely slide between the sides of the casing 3 and between the ribs 6. The casing 3 is provided with an aperture 21 upon one side thereof through which aperture 21 passes the rocker arm 22. This rocker arm .22 is pivotally mounted upon a pivot pin 23 between the arms 24 which are secured to one side of the casing 3. The rocker arm 22 extends through the slot 21 as above stated and rests upon the top oi the block 17. The outer end of the rougher arm 22 is engaged by means at an operating cable 25 which cable is connected to a ring 26, the ring 26 constituting a junction for the cables 25 extending upon the opposite sides of the car. lit of course should be understood that a brake is used upon each side oil the car and in connection with each trach,

Patented duly as; talc;

notches 11 formed in the it is only found necessary to describe de- I thrownto an operative position by pulling upon the eables27 thereby forcing the outer ends of the arms 22 U downward upon the block 17 and causing the shoes 12 to be firmly forced into' engagement with the rails over which the car may pass, It should be understood that the block 17 is normally urged in an upward position in engagement withl the operating lever 22 through the medium of the spring pressed plunger-s 19. It should be further understood that under normal conditions the shoes 12 will be held out (if engagement with the rails due to the actionof the springs 9. However the shoes may immediately thrown into engagement with the rails through the action of the le'ver 22 upon the block 17.

What,ise1ai'medis;-- I 1. A brake of the class described comprising casing, a pluralitysof shoes pivotally mountedneartheir Outerends upon said casing,.yieldable means engaging'the inner ends of said shoes for normally holding the samein an inoperative position with respect tqa rail, a -sliding blockyieldably engaging theinnerends of said shoes, and means engaging said sliding block for forcing said shoes downwardly to an operative position upon the rail.

. A rail brake of the class described "com prising acasing adapted to be supported that: a: all; eaten as lieobtiiiaed foiupon a ear,

a plurality of shoes pivotally mounted within said caslng, means tor yleldably holding said shoes in a retracted position and out of engagement witha rail a sliding block yieldably supported upon the inner ends of said shoes, and means engaging said sliding block for forcing the same downwardly andihereby forcing said shoes downwardly into engagement with a rail.

A rail brake of the class described comprising a casing adapted to be SllpPOllLKi upon a car, a plurality of, shoes pivotally mounted within said casing, means for yield: ably holding said shoes in' a retracted position and out of engagement with a rail, a sliding block yieldably supported upon the inner ends of said shoes, a rocker arm, a plurality of arms secured to said casing, said rocker arm being pivotally connected to said arms carried by said. casing, said rocker arm engaging said sliding block for forcing the same downwardly, and means connected to said rocker arm for swii'iging the same. t

4:. A rail brake of the class described com prising a casing, a plurality of shoes pivotally mountcdwithin said casing, a plurality of spaced ribs carried within said casing, spring pressed plun'gers mounted within said ribsand engaging said shoes for normally holding said shoes in a retracted position, a sliding block interposed between said ribs; spring plungers mounted within said sliding block and engaging the inner ends of said shoes for yieldably supporting said block upon said shoes and means for engaging said sliding block for forcing said block downwardly and urging said shoes outwardly into engagement with a rail over which saidtruck is passing.

I In testimony whereof I hereunto afiix my signature.

OTTO F EIMARK.

fine cents each, by addressing the Commissioner of new, Washington, 10. 

